Lamp.



PATENTED JAN. 10, 1905.

C. G. MALTON.

LAMP.

APPLICATION FILED 001. 1a, 1904.

2 SHEETS-SHEET 1 mt Weases Q c cgi CL (IT' v ///'s ittac'rrsgga/wy PATENTED JAN. 10, 1905.

C. G. MALTON.

LAMP.

APPLICATION FILED 001213. 1904.

2 SHEETS-SHEET 2.

TU'u W8556'6 UNITED STATEs Fatented January I0, 1905.

PATENT CEEIcE.

LAMP.

SPECIFICATION forming part of Letters Patent No. 779,724, dated January 10, 1905-. Application filed October 13, 1904:. Serial No. 228,282.

To'alll w/tom it may concern.-

ing purposes and in which a pilot-light is employed which is burning when the lamp is not in use, so that the opening of the valve to turn on the gas will, through the burning pilot-light, light the burners of the lamp. In the class of lamps referred to the heat from the burners is very great, so that it is necessary to suspend the shade over the burners at a considerable distance above the burners,

' and, further, the carbon in the gas is not thoroughly consumed and particles of carbon are given off from the burners which are discharged in the air around the lamp and act to blacken the shade and other surfaces.

The object of my invention is to improve upon the construction of the type of lamp above referred to as ordinarily made, and more particularly to provide an inclosed chamber, air-tight, which I term a superheatingchamber, located above the lamp proper. This chamber connects directly with the supply-pipe to the lamp. The supply-pipe is separated at the place Where it is connected with said chamber, so as to allow of the gas passmg into the chamber and spreading or diffusing itself within the chamber before it passes 4 through the other part of the supply-pipe to the burners. By means of the superheatingchamber the heat of the lamp when it is burning will heat the gas contained in the chamber, and this heat acts to cause the expansion of the gas in the chamber and the combustion of the carbon in the gas, thus producing a higher candle-power per foot of gas consumed and a brighter and whiter light; and, further, the heating-chamber absorbs the heat 5 from the burners, and thus enables the lamp to be hung much nearer to the ceiling without danger of blackening or discoloring the ceiling and also allows of the shade over the lamp being supported much nearer the top of the lamp than is customary; and, further, in my improvements I preferably provide a novel construction of supports for the shade.

My invention consists in certain novel features of construction of my improvements, as

will be hereinafter fully described.

I have shown in the drawings a gas-lamp of the class referred to of well-known construction with my improvements applied thereto.

Referring to the drawings, Figure 1 shows a lamp of the class referred to embodying my improvements, said lamp being partially shown in section and the shade portion partially broken away. Fig. 2 shows a shade combined with my superheating-chamber detached. Fig. 3 is an under side view of the upper part of the superheating-chamber, detached,looking in the direction of arrow at, Fig. 5. Fig. A is an under side view of the superheating-chamber with the shade-supporting devices thereon, one of the same being in in operative position, looking in the direction of arrow 6, Fig. 5. Fig. 5 is a central vertical section through the superheating-chamber, showing the gas-supply pipe. Figs. 3 to 5 are shown on an enlarged scale.

In the accompanying drawings, 1 is the lamp portion, having in this instancefour burners, one of which is not shown, surrounding the central supply-pipe 3 and each provided with a mantle 4E.

-5 is the pilot-light attachment, and 6 the cock for opening and closing the valve.

7 is a shade surrounding the burners. The supply-pipe 3 extends up through the upper part of the shade and above the burners and has in this instance secured thereto a disk 8, on which is supported and secured thereto an inclosed cylindrical part 9, having holes 9 therein. To the lower portion of the part 9 is secured the shade 10, in this instance by screws 11.

All of the above parts may be of well-known construction and as ordinarily made and used in the class of lamps of the Humphrey type referred to, as the same form no part of my 10 present improvements. I will now describe my improvements. 7

The supply-pipe 3 is separated, and the two parts thereof 3' and 3 in Fig. 5 are connected together through my superheating-chamber 12, which is located at any desired distance above the burners, preferably a foot or more. The superheating-chamber 12 is preferably of circular shape and is preferably made as shown in the drawings and consists of a lower disk portion 12, concaved on its under surface and provided with a central threaded opening 12*" to receive the threaded end of the pipe 3' and also provided with a horizontally-extending flange 12 around its outer edge. The upper part of the chamber 12 consists of a disk-shaped plate 12, concaved on its under surface and shaped to subtantially conform to the shape of the lower part 12 and leave a chamber or open space 12 between the two plates 12 and 12". (See Fig. The upper plate 12" has a central threaded opening therein to receive the threaded end of the upper pipe 3 and also has a horizontally-extending flange 12", which is secured to the flange 12 on the plate 12 by screws 13 or otherwise to make an air-tight joint.

I preferably provide a concaved spreading disk or plate 12", which is located within the chamber 12 and extends horizontally between the two sections 3 and 3 of the supply-pipe 3 and through the central part of the chamber 12. In this instance I have shown the disk 12 attached to and made apart of the upper plate 12"; but it may be made separate therefrom or attached to the lower plate 12.

In connection with the superheating-chamber 12, above described, I preferably use metal fingers or supports 14 for the shade 10. The supports 14 are preferably made, as shown, with two projecting lingers 14 and are pivotally attached by screws 15 or otherwise to the lower part of the edge of the superheatingchamber 12. The supports 14 are curved to correspond to the curvature of the shade. In order to attach the shade to the supports to suspend the same, the supports are moved around on their pivot-screws to extend within the outer line of the chamber 12, as shown in the upper part of Fig. 4. The shade is then held up in position just belowthe chamber 12, and the supports 14 are moved around on their pivot-screws to pass within the shade and extend under the curved part thereof and upon the outside of the chamber 12, as shown in Figs. 2 and 4.

The advantages of my improvements will be readily appreciated by those skilled in the art. By means of the superheating-chamber 12 the gas as it comes through the upper part of the supply-pipe 3" impinges on the upper side of the plate 14 and is spread around within the chamber 12 and passes over the edges of and under the plate 14 into the end 3 of the supply-pipe 3 before it passes to the burners. When the lamp is lighted, the heat from the burners will come in contact with the lower side of the heating-chamber 12 and will heat the gas contained within the chamber before the gas passes to the burners. The heating of the gas within the chamber 12 will act to destroy or consume the carbon particles in the gas, so that they will not be given off from the burners, and will also act to cause the expansion of the gas in the chamber to produce a better light, and, further, the heat from the burners will be substantially absorbed by the gas within the chamber, so that the heat will not affect the shade, and the shade can thus be suspended very close to the burners.

It will be understood that the details of construction of my improvements may be varied, if desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is g 1. In a lamp of the class described, the combination of a superheating-chamber, a supply-pipe connected to the upper wall of said chamber for conducting gas to said chamber, a supply-pipe connected to the lower wall of said chamber for conducting the gas from the chamber, and a spreading disk or plate within said superheating-chamber and disposed between theends of the supply-pipes.

2. In a lamp of the class described, the combination with the burner of superheatingchamber disposed above the burner, a supply pipe connected to the upper wall of the superheating-chamber, a supply-pipe connected to the lower wall of said chamber, and a curved spreading disk or plate disposed within said superheating-chamber between the ends of the supply-pipes.

3. In a lamp of the class described, the combination with the burner of a superheatingchamber disposed above the burner and comprising a concaved lower plate and a concaved upper plate, a supply-pipe connected to the upper concaved plate to conduct gas into the chamber, a supply-pipe connected to the lower concaved plate to conduct gas to the burner, and a concaved spreading disk or plate disposed within the superheating-chamber between the ends of the two pipes.

4. In a lamp of the class described, the combination with the burner, of a superheatingchamber disposed above the burner and comprising upper and lower plates, each having edge flanges, means for securing the flanges of the plates together to form an air-tight joint, and shade-supports pivotally connected to the superheating-chamber by said means which secures the flanges of the plates together.

CHARLES C. MALTON.

W'itnesses:

J 011x (1. DEWEY, M. HAAs. 

